div.layui-layer.layui-layer-page{
    background-color: rgba(255,255,255,0.8);
}

div.layui-layer.layui-layer-dialog.layui-layer-border.layui-layer-msg {
    top: 300px !important;
    width: 298px !important;
    background-color: rgba(255,255,255,0.8);
}